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Dynamic ARP inspection is not working

Hi, we have one WS-C3750X-12S-S as Core Switch where we have created all lan & wireless vlan, All access switches are connected from here. We want to apply Dynamic ARP inspection(DAI) in core switch to bind mac with ip.

But when we apply this in core switch, Serverfirm switch port which is connected with Core Switch goes down after some time. DHCP Server which is connected in the Serverfirm switch become unavailable as a result.

Below is a part of log in core switch:

Nov 24 03:29:27.136: %SW_DAI-4-DHCP_SNOOPING_DENY: 1 Invalid ARPs (Req) on G/4, vlan 108.([a8bb.cf23.4482/10.10.108.141/0000.0000.0000/10.10.108.1/03:29UTC Sun Nov 24 2013])

Nov 24 03:29:28.142: %SW_DAI-4-DHCP_SNOOPING_DENY: 1 Invalid ARPs (Req) on G/4, vlan 108.([5426.96d3.a599/10.10.108.142/0000.0000.0000/10.10.108.1/03:29UTC Sun Nov 24 2013])

Nov 24 03:29:28.142: %SW_DAI-4-DHCP_SNOOPING_DENY: 1 Invalid ARPs (Req) on G/9, vlan 108.([bc16.654c.1f37/10.10.108.133/0000.0000.0000/10.10.108.1/03:29UTC Sun Nov 24 2013])

Nov 24 03:29:28.142: %SW_DAI-4-DHCP_SNOOPING_DENY: 1 Invalid ARPs (Req) on G/4, vlan 108.([a8bb.cf23.4482/10.10.108.141/0000.0000.0000/10.10.108.1/03:29UTC Sun Nov 24 2013])

Nov 24 03:29:29.149: %SW_DAI-4-DHCP_SNOOPING_DENY: 1 Invalid ARPs (Req) on G/9, vlan 108.([bc16.654c.1f37/10.10.108.133/0000.0000.0000/10.10.108.1/03:29UTC Sun Nov 24 2013])

Though we have make the port where core switch connected with the serverfirm switch, Trust; but it did not work. We face this problem mainly in wireless vlan. Does it mean DAI is not applicable for Wireless in our network???

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Dynamic ARP inspection is not working

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